Socket not connected when using host ip address.

Im using socket on applet. Both client and server using applet. The program works within localhost. But when i tried using different computer in LAN, the socket is not connecting.

import java.awt.*;
import java.applet.Applet;
import java.awt.Image;
import java.awt.Component;
import java.awt.Graphics;
import java.net.*;
import java.io.*;

public class ImageDisplayer extends Applet{
	
	Image image;
	
	// Buttons
    Button sendButton;
    Button exitButton;
    Button resetButton;
    
    // text areas
    TextField respondField;
    
    // network components
    Socket socket;
    PrintStream outStream;
    DataInputStream inStream;
	
	public void init(){
		
		setLayout(null);
		
		try{
			
			socket = new Socket("192.168.1.3", 4444);//change to ip address of the server
			inStream = new DataInputStream(socket.getInputStream());//read data from socket
			outStream = new PrintStream(socket.getOutputStream());
		
		}
		catch(Exception exc){
			
            System.out.println("Error in initialize the network - " + exc.toString());
		}
		
	// text fields 
	Label l = new Label("RESPOND", Label.RIGHT);
    l.reshape(120, 570, 63, 25);
	add(l);
	respondField = new TextField();
    respondField.reshape(183, 570, 60, 30);
	add(respondField);

// create buttons
	sendButton = new Button("Send");
    sendButton.reshape(243, 570, 100, 30);
	add(sendButton);
	
	resetButton = new Button("Reset");
    resetButton.reshape(343, 570, 100, 30);
	add(resetButton);
	
	exitButton = new Button("Exit");
    exitButton.reshape(443, 570, 100, 30);
	exitButton.setBackground(Color.red);
	add(exitButton);
	
	String fileName = new String();
	try
	    {
	    	  	fileName = inStream.readLine();	
	    }
	    catch(Exception exc)
	    {
                System.out.println("Error in receiving order total - " + exc.toString());
	    }
	    	 	image = getImage(getCodeBase(),fileName); 
	}
		
		
	public boolean action(Event evt, Object obj){
		if(evt.target == sendButton){
			
			// get client respond
            String respond = new String();
            String fileName = new String();
            respond = respondField.getText();
            
       
            try
	    {
           outStream.println(respond);
           fileName = inStream.readLine();
	    }
	    
	    catch(Exception exc)
	    {
                System.out.println("Error in send the order to the server - " + exc.toString());
	    }
	    
	    image = getImage(getCodeBase(),fileName); 
	    
		}
		
		else if(evt.target == resetButton){

respondField.setText("");
	 
  		}
  		
  		else if(evt.target == exitButton){
  				
	    try
	    {
                socket.close();
	    } catch(Exception exc)
	    {
                System.out.println("Error in close the socket - " + exc.toString());
	    }
	    System.exit(0);
	    
		}
		
		return true;
	}
	
	public void paint(Graphics g){
		
		g.drawImage(image, 40,0,this);
	
	}
}

the host ip address is 192.168.1.3
client ip add is 192.168.1.2
please help...thank you

Use the host name

i tried using the hostname...still doesnt work...is there any other way?

See )]InetAddress.getByAddress(byte[] addr) if you want to use an IP address.

Is the server running before you try to connect using the client? Did you try testing the socket connection in the client using Socket.isConnected()?

Are you able to ping server from your client pc? If yest try to telnet the server from your client on the specified port and make sure its not blocked by any firewall and is running properly.

c:\>telnet <server_ip_addr> <port_num_on_which_the_server_is_running>

i tried to telnet and i am able to telnet. the thing is, before this i used basic socket without applet and it can communicate. but when i use the applet, it doesnt work. the applet only works within localhost environment. if i reside client and server on different machine, then it cant connect at all...i don understand why...

Is the server running before you try to connect using the client? Did you try testing the socket connection in the client using Socket.isConnected()?

yup, the server is running before connecting the server.

do you think its realted t Signed Applet? if it is, what should i do?

Wow, I totally forget about that. Yeah, applets run in a sandbox (a secure browser environment that restricts an applet privileges). And, one thing I know is not allowed is communication with a server that didn't issue the applet.

Thanks for replying all..i guess im gona hv to keep on trying within less than 5 hours before my system evaluation. cz i seriously dont know how to deal with signed applet. it looks complicated... i don even understand it...